EP 0933345 A1 19990804 - Three step process for producing light olefins from crude methane and/or ethane
Title (en)
Three step process for producing light olefins from crude methane and/or ethane
Title (de)
Dreistufenverfahren zur Herstellung von leichten Olefinin aus rauhe Methan und/oder Ethan
Title (fr)
Procédé à trois étapes pour la conversion de méthane et/ou d'éthane brut en oléfines légères
Publication
Application
Priority
- EP 98300641 A 19980129
- AU 5274798 A 19980127
- CA 2228738 A 19980202
- CN 98106192 A 19980127
- NO 980381 A 19980128
- NZ 32964598 A 19980127
- RU 98103428 A 19980202
- US 51324295 A 19950810
- ZA 98735 A 19980129
Abstract (en)
Light olefins (72, 74, 76) are produced from a hydrocarbon gas stream (50) by a combination of steam reforming (54), oxygenate production (58), and oxygenate conversion (66) to olefin wherein a crude methanol steam (60) - produced in the production of oxygenates and comprising methanol, light ends, and heavier alcohols - is passed directly to the oxygenate conversion zone (66) for the production of light olefins. Furthermore, the combination provides the synergy for increased catalyst life and reduced water treatment costs by recycling by-product water (71) produced in the oxygenate conversion zone to provide water to the steam reforming zone (54). The advantage of this integration is the elimination of costly methanol separation and purification steps which result in the overall reduction in the costs of producing the light olefins. In addition, a portion of the by-product water can be combined with a propylene stream to provide a high octane blending component for gasoline. The propylene and butylene fractions produced by the above integrated scheme are further converted to high octane ether and other high value products. <IMAGE>
IPC 1-7
IPC 8 full level
C10C 1/02 (2006.01); C07C 1/20 (2006.01); C07C 11/02 (2006.01); C07C 41/05 (2006.01); C07C 41/06 (2006.01); C08F 210/16 (2006.01)
CPC (source: EP US)
C07C 1/20 (2013.01 - EP US); C07C 11/02 (2013.01 - EP US); C07C 41/05 (2013.01 - EP US); C07C 41/06 (2013.01 - EP US); C08F 210/16 (2013.01 - EP US); C07C 2529/85 (2013.01 - EP US); Y02P 20/52 (2015.11 - EP US); Y02P 30/20 (2015.11 - EP US); Y02P 30/40 (2015.11 - EP US)
Citation (search report)
- [A] EP 0318282 A2 19890531 - UOP INC [US]
- [A] EP 0558839 A1 19930908 - UOP INC [US]
Designated contracting state (EPC)
BE DE DK ES FR GB IT NL SE
DOCDB simple family (publication)
US 5714662 A 19980203; AU 5274798 A 19990826; AU 744933 B2 20020307; CA 2228738 A1 19990802; CA 2228738 C 20060926; CN 1174945 C 20041110; CN 1224705 A 19990804; DE 69801643 D1 20011018; DE 69801643 T2 20020704; EP 0933345 A1 19990804; EP 0933345 B1 20010912; NO 311714 B1 20020114; NO 980381 D0 19980128; NO 980381 L 19990729; NZ 329645 A 19990629; RU 2165955 C2 20010427; ZA 98735 B 19980930
DOCDB simple family (application)
US 51324295 A 19950810; AU 5274798 A 19980127; CA 2228738 A 19980202; CN 98106192 A 19980127; DE 69801643 T 19980129; EP 98300641 A 19980129; NO 980381 A 19980128; NZ 32964598 A 19980127; RU 98103428 A 19980202; ZA 98735 A 19980129